Cars are already capable of driving and parking themselves while avoiding obstacles, but to do so, they need to see their surroundings. How do you know whether you’re maintaining a safe distance from vehicles around you when it’s dark outside, or when headlights can’t penetrate the fog? A new class of small, sensitive optical sensors could help.
Clean drinking water is arguably the most basic human necessity, yet in developing countries it’s a rare and precious resource — nearly 900 million people worldwide live without it, according to the World Health Organization. One MIT researcher has a solution: Drink the fog.